Home / 870,605.69-1,201,411.85-521,943.21

Finding the Fourth Proportional to 870,605.69, 1,201,411.85 and 521,943.21

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Solution

The fourth proportional to 870,605.69, 1,201,411.85 and 521,943.21 is: 720,267.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,605.69 : 1,201,411.85 = 521,943.21 : x
  2. Step 2: Convert to fraction form
    870,605.69/1,201,411.85 = 521,943.21/x
  3. Step 3: Cross multiply
    870,605.69x = 1,201,411.85 × 521,943.21
  4. Step 4: Simplify right side
    870,605.69x = 627,068,754,911.32
  5. Step 5: Solve for x
    x = 627,068,754,911.32/870,605.69
  6. Step 6: Final answer
    x = 720,267.24

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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.