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Finding the Fourth Proportional to 630,690.93, 870,373.77 and 358,751.82

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Solution

The fourth proportional to 630,690.93, 870,373.77 and 358,751.82 is: 495,089.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,690.93 : 870,373.77 = 358,751.82 : x
  2. Step 2: Convert to fraction form
    630,690.93/870,373.77 = 358,751.82/x
  3. Step 3: Cross multiply
    630,690.93x = 870,373.77 × 358,751.82
  4. Step 4: Simplify right side
    630,690.93x = 312,248,174,067.76
  5. Step 5: Solve for x
    x = 312,248,174,067.76/630,690.93
  6. Step 6: Final answer
    x = 495,089.05

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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.