Home / 724,480.65-999,733.10-402,165.45

Finding the Fourth Proportional to 724,480.65, 999,733.10 and 402,165.45

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Solution

The fourth proportional to 724,480.65, 999,733.10 and 402,165.45 is: 554,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,480.65 : 999,733.10 = 402,165.45 : x
  2. Step 2: Convert to fraction form
    724,480.65/999,733.10 = 402,165.45/x
  3. Step 3: Cross multiply
    724,480.65x = 999,733.10 × 402,165.45
  4. Step 4: Simplify right side
    724,480.65x = 402,058,110,030.57
  5. Step 5: Solve for x
    x = 402,058,110,030.57/724,480.65
  6. Step 6: Final answer
    x = 554,960.45

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Double scale
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1.5x scale

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.