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Finding the Fourth Proportional to 656,368,940.16, 906,068,039.04 and 408,972,528

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Solution

The fourth proportional to 656,368,940.16, 906,068,039.04 and 408,972,528 is: 564,555,867.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,368,940.16 : 906,068,039.04 = 408,972,528 : x
  2. Step 2: Convert to fraction form
    656,368,940.16/906,068,039.04 = 408,972,528/x
  3. Step 3: Cross multiply
    656,368,940.16x = 906,068,039.04 × 408,972,528
  4. Step 4: Simplify right side
    656,368,940.16x = 370,556,936,466,191,488
  5. Step 5: Solve for x
    x = 370,556,936,466,191,488/656,368,940.16
  6. Step 6: Final answer
    x = 564,555,867.58

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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.