Home / 669,011,859.56-922,864,442.96-621,664,747.48

Finding the Fourth Proportional to 669,011,859.56, 922,864,442.96 and 621,664,747.48

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Solution

The fourth proportional to 669,011,859.56, 922,864,442.96 and 621,664,747.48 is: 857,551,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,011,859.56 : 922,864,442.96 = 621,664,747.48 : x
  2. Step 2: Convert to fraction form
    669,011,859.56/922,864,442.96 = 621,664,747.48/x
  3. Step 3: Cross multiply
    669,011,859.56x = 922,864,442.96 × 621,664,747.48
  4. Step 4: Simplify right side
    669,011,859.56x = 573,712,290,890,999,296
  5. Step 5: Solve for x
    x = 573,712,290,890,999,296/669,011,859.56
  6. Step 6: Final answer
    x = 857,551,749.93

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Double scale
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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.