Home / 989,139.30-1,483,417.35-389,901.30

Finding the Fourth Proportional to 989,139.30, 1,483,417.35 and 389,901.30

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Solution

The fourth proportional to 989,139.30, 1,483,417.35 and 389,901.30 is: 584,737.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,139.30 : 1,483,417.35 = 389,901.30 : x
  2. Step 2: Convert to fraction form
    989,139.30/1,483,417.35 = 389,901.30/x
  3. Step 3: Cross multiply
    989,139.30x = 1,483,417.35 × 389,901.30
  4. Step 4: Simplify right side
    989,139.30x = 578,386,353,207.56
  5. Step 5: Solve for x
    x = 578,386,353,207.56/989,139.30
  6. Step 6: Final answer
    x = 584,737.01

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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.