Home / 1,038,280.20-1,557,420.30-328,363.80

Finding the Fourth Proportional to 1,038,280.20, 1,557,420.30 and 328,363.80

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Solution

The fourth proportional to 1,038,280.20, 1,557,420.30 and 328,363.80 is: 492,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,280.20 : 1,557,420.30 = 328,363.80 : x
  2. Step 2: Convert to fraction form
    1,038,280.20/1,557,420.30 = 328,363.80/x
  3. Step 3: Cross multiply
    1,038,280.20x = 1,557,420.30 × 328,363.80
  4. Step 4: Simplify right side
    1,038,280.20x = 511,400,447,905.14
  5. Step 5: Solve for x
    x = 511,400,447,905.14/1,038,280.20
  6. Step 6: Final answer
    x = 492,545.70

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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.