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Finding the Fourth Proportional to 518,357.12, 715,329.64 and 292,075.52

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Solution

The fourth proportional to 518,357.12, 715,329.64 and 292,075.52 is: 403,062.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,357.12 : 715,329.64 = 292,075.52 : x
  2. Step 2: Convert to fraction form
    518,357.12/715,329.64 = 292,075.52/x
  3. Step 3: Cross multiply
    518,357.12x = 715,329.64 × 292,075.52
  4. Step 4: Simplify right side
    518,357.12x = 208,930,276,574.41
  5. Step 5: Solve for x
    x = 208,930,276,574.41/518,357.12
  6. Step 6: Final answer
    x = 403,062.42

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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.