Home / 917,001,079.32-1,265,456,099.28-499,312,364.52

Finding the Fourth Proportional to 917,001,079.32, 1,265,456,099.28 and 499,312,364.52

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Solution

The fourth proportional to 917,001,079.32, 1,265,456,099.28 and 499,312,364.52 is: 689,048,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,001,079.32 : 1,265,456,099.28 = 499,312,364.52 : x
  2. Step 2: Convert to fraction form
    917,001,079.32/1,265,456,099.28 = 499,312,364.52/x
  3. Step 3: Cross multiply
    917,001,079.32x = 1,265,456,099.28 × 499,312,364.52
  4. Step 4: Simplify right side
    917,001,079.32x = 631,857,877,127,752,576
  5. Step 5: Solve for x
    x = 631,857,877,127,752,576/917,001,079.32
  6. Step 6: Final answer
    x = 689,048,128.05

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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.