Home / 820,915.48-1,132,885.98-458,325.40

Finding the Fourth Proportional to 820,915.48, 1,132,885.98 and 458,325.40

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Solution

The fourth proportional to 820,915.48, 1,132,885.98 and 458,325.40 is: 632,501.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,915.48 : 1,132,885.98 = 458,325.40 : x
  2. Step 2: Convert to fraction form
    820,915.48/1,132,885.98 = 458,325.40/x
  3. Step 3: Cross multiply
    820,915.48x = 1,132,885.98 × 458,325.40
  4. Step 4: Simplify right side
    820,915.48x = 519,230,419,937.89
  5. Step 5: Solve for x
    x = 519,230,419,937.89/820,915.48
  6. Step 6: Final answer
    x = 632,501.68

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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.