Home / 558,461.28-770,254.21-386,666.76

Finding the Fourth Proportional to 558,461.28, 770,254.21 and 386,666.76

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Solution

The fourth proportional to 558,461.28, 770,254.21 and 386,666.76 is: 533,307.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,461.28 : 770,254.21 = 386,666.76 : x
  2. Step 2: Convert to fraction form
    558,461.28/770,254.21 = 386,666.76/x
  3. Step 3: Cross multiply
    558,461.28x = 770,254.21 × 386,666.76
  4. Step 4: Simplify right side
    558,461.28x = 297,831,703,128.85
  5. Step 5: Solve for x
    x = 297,831,703,128.85/558,461.28
  6. Step 6: Final answer
    x = 533,307.70

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Double scale
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Similar ratio
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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.