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Finding the Fourth Proportional to 570,415.66, 787,182.91 and 312,288.28

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Solution

The fourth proportional to 570,415.66, 787,182.91 and 312,288.28 is: 430,962.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,415.66 : 787,182.91 = 312,288.28 : x
  2. Step 2: Convert to fraction form
    570,415.66/787,182.91 = 312,288.28/x
  3. Step 3: Cross multiply
    570,415.66x = 787,182.91 × 312,288.28
  4. Step 4: Simplify right side
    570,415.66x = 245,827,997,897.28
  5. Step 5: Solve for x
    x = 245,827,997,897.28/570,415.66
  6. Step 6: Final answer
    x = 430,962.92

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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.