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Finding the Fourth Proportional to 630,649.94, 870,317.28 and 358,710.84

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Solution

The fourth proportional to 630,649.94, 870,317.28 and 358,710.84 is: 495,032.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,649.94 : 870,317.28 = 358,710.84 : x
  2. Step 2: Convert to fraction form
    630,649.94/870,317.28 = 358,710.84/x
  3. Step 3: Cross multiply
    630,649.94x = 870,317.28 × 358,710.84
  4. Step 4: Simplify right side
    630,649.94x = 312,192,242,575.32
  5. Step 5: Solve for x
    x = 312,192,242,575.32/630,649.94
  6. Step 6: Final answer
    x = 495,032.54

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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.