Home / 820,870,948.35-1,231,314,394.14-656,700,862.77

Finding the Fourth Proportional to 820,870,948.35, 1,231,314,394.14 and 656,700,862.77

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Solution

The fourth proportional to 820,870,948.35, 1,231,314,394.14 and 656,700,862.77 is: 985,057,671.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,870,948.35 : 1,231,314,394.14 = 656,700,862.77 : x
  2. Step 2: Convert to fraction form
    820,870,948.35/1,231,314,394.14 = 656,700,862.77/x
  3. Step 3: Cross multiply
    820,870,948.35x = 1,231,314,394.14 × 656,700,862.77
  4. Step 4: Simplify right side
    820,870,948.35x = 808,605,224,972,857,856
  5. Step 5: Solve for x
    x = 808,605,224,972,857,856/820,870,948.35
  6. Step 6: Final answer
    x = 985,057,671.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.