Home / 688,079.78-949,543.50-386,271.62

Finding the Fourth Proportional to 688,079.78, 949,543.50 and 386,271.62

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Solution

The fourth proportional to 688,079.78, 949,543.50 and 386,271.62 is: 533,051.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,079.78 : 949,543.50 = 386,271.62 : x
  2. Step 2: Convert to fraction form
    688,079.78/949,543.50 = 386,271.62/x
  3. Step 3: Cross multiply
    688,079.78x = 949,543.50 × 386,271.62
  4. Step 4: Simplify right side
    688,079.78x = 366,781,706,005.47
  5. Step 5: Solve for x
    x = 366,781,706,005.47/688,079.78
  6. Step 6: Final answer
    x = 533,051.13

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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.