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Finding the Fourth Proportional to 972,648.40, 1,458,281.40 and 440,424.40

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Solution

The fourth proportional to 972,648.40, 1,458,281.40 and 440,424.40 is: 660,323.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,648.40 : 1,458,281.40 = 440,424.40 : x
  2. Step 2: Convert to fraction form
    972,648.40/1,458,281.40 = 440,424.40/x
  3. Step 3: Cross multiply
    972,648.40x = 1,458,281.40 × 440,424.40
  4. Step 4: Simplify right side
    972,648.40x = 642,262,710,626.16
  5. Step 5: Solve for x
    x = 642,262,710,626.16/972,648.40
  6. Step 6: Final answer
    x = 660,323.62

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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.