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Finding the Fourth Proportional to 530,492.54, 732,079.80 and 288,776.93

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Solution

The fourth proportional to 530,492.54, 732,079.80 and 288,776.93 is: 398,512.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,492.54 : 732,079.80 = 288,776.93 : x
  2. Step 2: Convert to fraction form
    530,492.54/732,079.80 = 288,776.93/x
  3. Step 3: Cross multiply
    530,492.54x = 732,079.80 × 288,776.93
  4. Step 4: Simplify right side
    530,492.54x = 211,407,757,159.01
  5. Step 5: Solve for x
    x = 211,407,757,159.01/530,492.54
  6. Step 6: Final answer
    x = 398,512.22

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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.