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Finding the Fourth Proportional to 554,746.39, 765,542.58 and 309,734.91

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Solution

The fourth proportional to 554,746.39, 765,542.58 and 309,734.91 is: 427,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,746.39 : 765,542.58 = 309,734.91 : x
  2. Step 2: Convert to fraction form
    554,746.39/765,542.58 = 309,734.91/x
  3. Step 3: Cross multiply
    554,746.39x = 765,542.58 × 309,734.91
  4. Step 4: Simplify right side
    554,746.39x = 237,115,262,117.47
  5. Step 5: Solve for x
    x = 237,115,262,117.47/554,746.39
  6. Step 6: Final answer
    x = 427,430.02

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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.