Home / 989,177.85-1,482,991.65-390,587.07

Finding the Fourth Proportional to 989,177.85, 1,482,991.65 and 390,587.07

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Solution

The fourth proportional to 989,177.85, 1,482,991.65 and 390,587.07 is: 585,574.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,177.85 : 1,482,991.65 = 390,587.07 : x
  2. Step 2: Convert to fraction form
    989,177.85/1,482,991.65 = 390,587.07/x
  3. Step 3: Cross multiply
    989,177.85x = 1,482,991.65 × 390,587.07
  4. Step 4: Simplify right side
    989,177.85x = 579,237,363,407.97
  5. Step 5: Solve for x
    x = 579,237,363,407.97/989,177.85
  6. Step 6: Final answer
    x = 585,574.54

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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.