Home / 717,828.69-990,430.27-472,787.49

Finding the Fourth Proportional to 717,828.69, 990,430.27 and 472,787.49

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Solution

The fourth proportional to 717,828.69, 990,430.27 and 472,787.49 is: 652,332.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,828.69 : 990,430.27 = 472,787.49 : x
  2. Step 2: Convert to fraction form
    717,828.69/990,430.27 = 472,787.49/x
  3. Step 3: Cross multiply
    717,828.69x = 990,430.27 × 472,787.49
  4. Step 4: Simplify right side
    717,828.69x = 468,263,041,373.32
  5. Step 5: Solve for x
    x = 468,263,041,373.32/717,828.69
  6. Step 6: Final answer
    x = 652,332.58

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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.