Home / 989,140.60-1,483,710.90-918,281.80

Finding the Fourth Proportional to 989,140.60, 1,483,710.90 and 918,281.80

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Solution

The fourth proportional to 989,140.60, 1,483,710.90 and 918,281.80 is: 1,377,422.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,140.60 : 1,483,710.90 = 918,281.80 : x
  2. Step 2: Convert to fraction form
    989,140.60/1,483,710.90 = 918,281.80/x
  3. Step 3: Cross multiply
    989,140.60x = 1,483,710.90 × 918,281.80
  4. Step 4: Simplify right side
    989,140.60x = 1,362,464,715,931.62
  5. Step 5: Solve for x
    x = 1,362,464,715,931.62/989,140.60
  6. Step 6: Final answer
    x = 1,377,422.70

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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.