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Finding the Fourth Proportional to 710,271.52, 980,132.16 and 387,917.44

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Solution

The fourth proportional to 710,271.52, 980,132.16 and 387,917.44 is: 535,302.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,271.52 : 980,132.16 = 387,917.44 : x
  2. Step 2: Convert to fraction form
    710,271.52/980,132.16 = 387,917.44/x
  3. Step 3: Cross multiply
    710,271.52x = 980,132.16 × 387,917.44
  4. Step 4: Simplify right side
    710,271.52x = 380,210,358,368.87
  5. Step 5: Solve for x
    x = 380,210,358,368.87/710,271.52
  6. Step 6: Final answer
    x = 535,302.84

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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.