Home / 710,108.10-979,905.78-387,752.64

Finding the Fourth Proportional to 710,108.10, 979,905.78 and 387,752.64

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Solution

The fourth proportional to 710,108.10, 979,905.78 and 387,752.64 is: 535,074.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,108.10 : 979,905.78 = 387,752.64 : x
  2. Step 2: Convert to fraction form
    710,108.10/979,905.78 = 387,752.64/x
  3. Step 3: Cross multiply
    710,108.10x = 979,905.78 × 387,752.64
  4. Step 4: Simplify right side
    710,108.10x = 379,961,053,146.26
  5. Step 5: Solve for x
    x = 379,961,053,146.26/710,108.10
  6. Step 6: Final answer
    x = 535,074.95

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Double scale
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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.