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Finding the Fourth Proportional to 530,478.28, 732,069.36 and 288,767.80

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Solution

The fourth proportional to 530,478.28, 732,069.36 and 288,767.80 is: 398,504.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,478.28 : 732,069.36 = 288,767.80 : x
  2. Step 2: Convert to fraction form
    530,478.28/732,069.36 = 288,767.80/x
  3. Step 3: Cross multiply
    530,478.28x = 732,069.36 × 288,767.80
  4. Step 4: Simplify right side
    530,478.28x = 211,398,058,534.61
  5. Step 5: Solve for x
    x = 211,398,058,534.61/530,478.28
  6. Step 6: Final answer
    x = 398,504.64

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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.