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Finding the Fourth Proportional to 613,810.20, 920,715.30 and 424,853.40

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Solution

The fourth proportional to 613,810.20, 920,715.30 and 424,853.40 is: 637,280.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,810.20 : 920,715.30 = 424,853.40 : x
  2. Step 2: Convert to fraction form
    613,810.20/920,715.30 = 424,853.40/x
  3. Step 3: Cross multiply
    613,810.20x = 920,715.30 × 424,853.40
  4. Step 4: Simplify right side
    613,810.20x = 391,169,025,637.02
  5. Step 5: Solve for x
    x = 391,169,025,637.02/613,810.20
  6. Step 6: Final answer
    x = 637,280.10

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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.