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Finding the Fourth Proportional to 499,279.20, 748,918.80 and 310,322.40

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Solution

The fourth proportional to 499,279.20, 748,918.80 and 310,322.40 is: 465,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,279.20 : 748,918.80 = 310,322.40 : x
  2. Step 2: Convert to fraction form
    499,279.20/748,918.80 = 310,322.40/x
  3. Step 3: Cross multiply
    499,279.20x = 748,918.80 × 310,322.40
  4. Step 4: Simplify right side
    499,279.20x = 232,406,279,421.12
  5. Step 5: Solve for x
    x = 232,406,279,421.12/499,279.20
  6. Step 6: Final answer
    x = 465,483.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.