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Finding the Fourth Proportional to 672,688.16, 928,689.36 and 446,642.72

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Solution

The fourth proportional to 672,688.16, 928,689.36 and 446,642.72 is: 616,619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,688.16 : 928,689.36 = 446,642.72 : x
  2. Step 2: Convert to fraction form
    672,688.16/928,689.36 = 446,642.72/x
  3. Step 3: Cross multiply
    672,688.16x = 928,689.36 × 446,642.72
  4. Step 4: Simplify right side
    672,688.16x = 414,792,341,785.46
  5. Step 5: Solve for x
    x = 414,792,341,785.46/672,688.16
  6. Step 6: Final answer
    x = 616,619.06

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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.