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Finding the Fourth Proportional to 710,066.01, 979,898.90 and 387,785.60

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Solution

The fourth proportional to 710,066.01, 979,898.90 and 387,785.60 is: 535,148.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,066.01 : 979,898.90 = 387,785.60 : x
  2. Step 2: Convert to fraction form
    710,066.01/979,898.90 = 387,785.60/x
  3. Step 3: Cross multiply
    710,066.01x = 979,898.90 × 387,785.60
  4. Step 4: Simplify right side
    710,066.01x = 379,990,682,875.84
  5. Step 5: Solve for x
    x = 379,990,682,875.84/710,066.01
  6. Step 6: Final answer
    x = 535,148.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.