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Finding the Fourth Proportional to 710,219.72, 980,097.38 and 387,930.02

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Solution

The fourth proportional to 710,219.72, 980,097.38 and 387,930.02 is: 535,340.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,219.72 : 980,097.38 = 387,930.02 : x
  2. Step 2: Convert to fraction form
    710,219.72/980,097.38 = 387,930.02/x
  3. Step 3: Cross multiply
    710,219.72x = 980,097.38 × 387,930.02
  4. Step 4: Simplify right side
    710,219.72x = 380,209,196,225.35
  5. Step 5: Solve for x
    x = 380,209,196,225.35/710,219.72
  6. Step 6: Final answer
    x = 535,340.24

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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.