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Finding the Fourth Proportional to 710,166, 980,029.04 and 387,876.86

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Solution

The fourth proportional to 710,166, 980,029.04 and 387,876.86 is: 535,270.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,166 : 980,029.04 = 387,876.86 : x
  2. Step 2: Convert to fraction form
    710,166/980,029.04 = 387,876.86/x
  3. Step 3: Cross multiply
    710,166x = 980,029.04 × 387,876.86
  4. Step 4: Simplify right side
    710,166x = 380,130,579,904.49
  5. Step 5: Solve for x
    x = 380,130,579,904.49/710,166
  6. Step 6: Final answer
    x = 535,270.04

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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.