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Finding the Fourth Proportional to 922,752.45, 1,384,271.24 and 390,276.45

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Solution

The fourth proportional to 922,752.45, 1,384,271.24 and 390,276.45 is: 585,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,752.45 : 1,384,271.24 = 390,276.45 : x
  2. Step 2: Convert to fraction form
    922,752.45/1,384,271.24 = 390,276.45/x
  3. Step 3: Cross multiply
    922,752.45x = 1,384,271.24 × 390,276.45
  4. Step 4: Simplify right side
    922,752.45x = 540,248,463,432.92
  5. Step 5: Solve for x
    x = 540,248,463,432.92/922,752.45
  6. Step 6: Final answer
    x = 585,474.97

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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.