Home / 820,985.88-1,132,979.76-458,397.48

Finding the Fourth Proportional to 820,985.88, 1,132,979.76 and 458,397.48

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Solution

The fourth proportional to 820,985.88, 1,132,979.76 and 458,397.48 is: 632,599.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,985.88 : 1,132,979.76 = 458,397.48 : x
  2. Step 2: Convert to fraction form
    820,985.88/1,132,979.76 = 458,397.48/x
  3. Step 3: Cross multiply
    820,985.88x = 1,132,979.76 × 458,397.48
  4. Step 4: Simplify right side
    820,985.88x = 519,355,066,875.01
  5. Step 5: Solve for x
    x = 519,355,066,875.01/820,985.88
  6. Step 6: Final answer
    x = 632,599.27

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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.