Home / 525,926.16-725,829.15-311,135.40

Finding the Fourth Proportional to 525,926.16, 725,829.15 and 311,135.40

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Solution

The fourth proportional to 525,926.16, 725,829.15 and 311,135.40 is: 429,397.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,926.16 : 725,829.15 = 311,135.40 : x
  2. Step 2: Convert to fraction form
    525,926.16/725,829.15 = 311,135.40/x
  3. Step 3: Cross multiply
    525,926.16x = 725,829.15 × 311,135.40
  4. Step 4: Simplify right side
    525,926.16x = 225,831,142,916.91
  5. Step 5: Solve for x
    x = 225,831,142,916.91/525,926.16
  6. Step 6: Final answer
    x = 429,397.05

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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.