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Finding the Fourth Proportional to 530,430.06, 732,008.92 and 288,728.22

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Solution

The fourth proportional to 530,430.06, 732,008.92 and 288,728.22 is: 398,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,430.06 : 732,008.92 = 288,728.22 : x
  2. Step 2: Convert to fraction form
    530,430.06/732,008.92 = 288,728.22/x
  3. Step 3: Cross multiply
    530,430.06x = 732,008.92 × 288,728.22
  4. Step 4: Simplify right side
    530,430.06x = 211,351,632,495.72
  5. Step 5: Solve for x
    x = 211,351,632,495.72/530,430.06
  6. Step 6: Final answer
    x = 398,453.35

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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.