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Finding the Fourth Proportional to 938,888.01, 1,407,978.45 and 339,701.04

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Solution

The fourth proportional to 938,888.01, 1,407,978.45 and 339,701.04 is: 509,423.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,888.01 : 1,407,978.45 = 339,701.04 : x
  2. Step 2: Convert to fraction form
    938,888.01/1,407,978.45 = 339,701.04/x
  3. Step 3: Cross multiply
    938,888.01x = 1,407,978.45 × 339,701.04
  4. Step 4: Simplify right side
    938,888.01x = 478,291,743,762.59
  5. Step 5: Solve for x
    x = 478,291,743,762.59/938,888.01
  6. Step 6: Final answer
    x = 509,423.64

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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.