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Finding the Fourth Proportional to 555,746.32, 766,506.74 and 478,353.68

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Solution

The fourth proportional to 555,746.32, 766,506.74 and 478,353.68 is: 659,763.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,746.32 : 766,506.74 = 478,353.68 : x
  2. Step 2: Convert to fraction form
    555,746.32/766,506.74 = 478,353.68/x
  3. Step 3: Cross multiply
    555,746.32x = 766,506.74 × 478,353.68
  4. Step 4: Simplify right side
    555,746.32x = 366,661,313,599.50
  5. Step 5: Solve for x
    x = 366,661,313,599.50/555,746.32
  6. Step 6: Final answer
    x = 659,763.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.