Home / 558,019.90-837,029.85-390,058.30

Finding the Fourth Proportional to 558,019.90, 837,029.85 and 390,058.30

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Solution

The fourth proportional to 558,019.90, 837,029.85 and 390,058.30 is: 585,087.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,019.90 : 837,029.85 = 390,058.30 : x
  2. Step 2: Convert to fraction form
    558,019.90/837,029.85 = 390,058.30/x
  3. Step 3: Cross multiply
    558,019.90x = 837,029.85 × 390,058.30
  4. Step 4: Simplify right side
    558,019.90x = 326,490,440,340.26
  5. Step 5: Solve for x
    x = 326,490,440,340.26/558,019.90
  6. Step 6: Final answer
    x = 585,087.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.