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Finding the Fourth Proportional to 713,197.86, 984,207.20 and 390,907.23

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Solution

The fourth proportional to 713,197.86, 984,207.20 and 390,907.23 is: 539,448.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,197.86 : 984,207.20 = 390,907.23 : x
  2. Step 2: Convert to fraction form
    713,197.86/984,207.20 = 390,907.23/x
  3. Step 3: Cross multiply
    713,197.86x = 984,207.20 × 390,907.23
  4. Step 4: Simplify right side
    713,197.86x = 384,733,708,343.52
  5. Step 5: Solve for x
    x = 384,733,708,343.52/713,197.86
  6. Step 6: Final answer
    x = 539,448.77

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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.