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Finding the Fourth Proportional to 570,271.32, 787,149.77 and 328,715.42

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Solution

The fourth proportional to 570,271.32, 787,149.77 and 328,715.42 is: 453,728.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,271.32 : 787,149.77 = 328,715.42 : x
  2. Step 2: Convert to fraction form
    570,271.32/787,149.77 = 328,715.42/x
  3. Step 3: Cross multiply
    570,271.32x = 787,149.77 × 328,715.42
  4. Step 4: Simplify right side
    570,271.32x = 258,748,261,669.13
  5. Step 5: Solve for x
    x = 258,748,261,669.13/570,271.32
  6. Step 6: Final answer
    x = 453,728.34

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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.