Home / 989,409.30-1,483,670.48-390,061.95

Finding the Fourth Proportional to 989,409.30, 1,483,670.48 and 390,061.95

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Solution

The fourth proportional to 989,409.30, 1,483,670.48 and 390,061.95 is: 584,918.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,409.30 : 1,483,670.48 = 390,061.95 : x
  2. Step 2: Convert to fraction form
    989,409.30/1,483,670.48 = 390,061.95/x
  3. Step 3: Cross multiply
    989,409.30x = 1,483,670.48 × 390,061.95
  4. Step 4: Simplify right side
    989,409.30x = 578,723,398,635.93
  5. Step 5: Solve for x
    x = 578,723,398,635.93/989,409.30
  6. Step 6: Final answer
    x = 584,918.09

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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.