Home / 1,166,615,439.72-1,609,897,456.28-645,076,838.76

Finding the Fourth Proportional to 1,166,615,439.72, 1,609,897,456.28 and 645,076,838.76

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Solution

The fourth proportional to 1,166,615,439.72, 1,609,897,456.28 and 645,076,838.76 is: 890,188,425.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166,615,439.72 : 1,609,897,456.28 = 645,076,838.76 : x
  2. Step 2: Convert to fraction form
    1,166,615,439.72/1,609,897,456.28 = 645,076,838.76/x
  3. Step 3: Cross multiply
    1,166,615,439.72x = 1,609,897,456.28 × 645,076,838.76
  4. Step 4: Simplify right side
    1,166,615,439.72x = 1,038,507,561,824,867,712
  5. Step 5: Solve for x
    x = 1,038,507,561,824,867,712/1,166,615,439.72
  6. Step 6: Final answer
    x = 890,188,425.82

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Double scale
Find fourth proportional to 1,166,615,440.72, 1,609,897,457.66 and 645,076,839.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.