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Finding the Fourth Proportional to 530,034.91, 731,440.47 and 288,319.44

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Solution

The fourth proportional to 530,034.91, 731,440.47 and 288,319.44 is: 397,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,034.91 : 731,440.47 = 288,319.44 : x
  2. Step 2: Convert to fraction form
    530,034.91/731,440.47 = 288,319.44/x
  3. Step 3: Cross multiply
    530,034.91x = 731,440.47 × 288,319.44
  4. Step 4: Simplify right side
    530,034.91x = 210,888,506,703.74
  5. Step 5: Solve for x
    x = 210,888,506,703.74/530,034.91
  6. Step 6: Final answer
    x = 397,876.64

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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.