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Finding the Fourth Proportional to 972,703.80, 1,458,710.10 and 440,479.80

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Solution

The fourth proportional to 972,703.80, 1,458,710.10 and 440,479.80 is: 660,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,703.80 : 1,458,710.10 = 440,479.80 : x
  2. Step 2: Convert to fraction form
    972,703.80/1,458,710.10 = 440,479.80/x
  3. Step 3: Cross multiply
    972,703.80x = 1,458,710.10 × 440,479.80
  4. Step 4: Simplify right side
    972,703.80x = 642,532,333,105.98
  5. Step 5: Solve for x
    x = 642,532,333,105.98/972,703.80
  6. Step 6: Final answer
    x = 660,563.20

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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.