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Finding the Fourth Proportional to 578,666.90, 868,000.35 and 368,455.70

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Solution

The fourth proportional to 578,666.90, 868,000.35 and 368,455.70 is: 552,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,666.90 : 868,000.35 = 368,455.70 : x
  2. Step 2: Convert to fraction form
    578,666.90/868,000.35 = 368,455.70/x
  3. Step 3: Cross multiply
    578,666.90x = 868,000.35 × 368,455.70
  4. Step 4: Simplify right side
    578,666.90x = 319,819,676,559.50
  5. Step 5: Solve for x
    x = 319,819,676,559.50/578,666.90
  6. Step 6: Final answer
    x = 552,683.55

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Double scale
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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.