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Finding the Fourth Proportional to 562,439.12, 776,164.56 and 307,788.08

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Solution

The fourth proportional to 562,439.12, 776,164.56 and 307,788.08 is: 424,746.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,439.12 : 776,164.56 = 307,788.08 : x
  2. Step 2: Convert to fraction form
    562,439.12/776,164.56 = 307,788.08/x
  3. Step 3: Cross multiply
    562,439.12x = 776,164.56 × 307,788.08
  4. Step 4: Simplify right side
    562,439.12x = 238,894,199,686.45
  5. Step 5: Solve for x
    x = 238,894,199,686.45/562,439.12
  6. Step 6: Final answer
    x = 424,746.77

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Similar ratio
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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.