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Finding the Fourth Proportional to 970,477.20, 1,455,715.80 and 915,364.80

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Solution

The fourth proportional to 970,477.20, 1,455,715.80 and 915,364.80 is: 1,373,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,477.20 : 1,455,715.80 = 915,364.80 : x
  2. Step 2: Convert to fraction form
    970,477.20/1,455,715.80 = 915,364.80/x
  3. Step 3: Cross multiply
    970,477.20x = 1,455,715.80 × 915,364.80
  4. Step 4: Simplify right side
    970,477.20x = 1,332,511,002,123.84
  5. Step 5: Solve for x
    x = 1,332,511,002,123.84/970,477.20
  6. Step 6: Final answer
    x = 1,373,047.20

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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.