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Finding the Fourth Proportional to 458,809.80, 688,214.70 and 346,835.40

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Solution

The fourth proportional to 458,809.80, 688,214.70 and 346,835.40 is: 520,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,809.80 : 688,214.70 = 346,835.40 : x
  2. Step 2: Convert to fraction form
    458,809.80/688,214.70 = 346,835.40/x
  3. Step 3: Cross multiply
    458,809.80x = 688,214.70 × 346,835.40
  4. Step 4: Simplify right side
    458,809.80x = 238,697,220,760.38
  5. Step 5: Solve for x
    x = 238,697,220,760.38/458,809.80
  6. Step 6: Final answer
    x = 520,253.10

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Similar ratio
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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.