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Finding the Fourth Proportional to 703,903.55, 972,188.80 and 477,155.39

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Solution

The fourth proportional to 703,903.55, 972,188.80 and 477,155.39 is: 659,018.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,903.55 : 972,188.80 = 477,155.39 : x
  2. Step 2: Convert to fraction form
    703,903.55/972,188.80 = 477,155.39/x
  3. Step 3: Cross multiply
    703,903.55x = 972,188.80 × 477,155.39
  4. Step 4: Simplify right side
    703,903.55x = 463,885,119,963.80
  5. Step 5: Solve for x
    x = 463,885,119,963.80/703,903.55
  6. Step 6: Final answer
    x = 659,018.02

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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.