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Finding the Fourth Proportional to 554,953.80, 832,430.70 and 342,377.40

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Solution

The fourth proportional to 554,953.80, 832,430.70 and 342,377.40 is: 513,566.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,953.80 : 832,430.70 = 342,377.40 : x
  2. Step 2: Convert to fraction form
    554,953.80/832,430.70 = 342,377.40/x
  3. Step 3: Cross multiply
    554,953.80x = 832,430.70 × 342,377.40
  4. Step 4: Simplify right side
    554,953.80x = 285,005,458,746.18
  5. Step 5: Solve for x
    x = 285,005,458,746.18/554,953.80
  6. Step 6: Final answer
    x = 513,566.10

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Similar ratio
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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.