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Finding the Fourth Proportional to 535,459.71, 738,930.08 and 290,443.85

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Solution

The fourth proportional to 535,459.71, 738,930.08 and 290,443.85 is: 400,810.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,459.71 : 738,930.08 = 290,443.85 : x
  2. Step 2: Convert to fraction form
    535,459.71/738,930.08 = 290,443.85/x
  3. Step 3: Cross multiply
    535,459.71x = 738,930.08 × 290,443.85
  4. Step 4: Simplify right side
    535,459.71x = 214,617,697,316.01
  5. Step 5: Solve for x
    x = 214,617,697,316.01/535,459.71
  6. Step 6: Final answer
    x = 400,810.17

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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.