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Finding the Fourth Proportional to 570,208.80, 786,878.04 and 328,490.76

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Solution

The fourth proportional to 570,208.80, 786,878.04 and 328,490.76 is: 453,311.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,208.80 : 786,878.04 = 328,490.76 : x
  2. Step 2: Convert to fraction form
    570,208.80/786,878.04 = 328,490.76/x
  3. Step 3: Cross multiply
    570,208.80x = 786,878.04 × 328,490.76
  4. Step 4: Simplify right side
    570,208.80x = 258,482,165,386.91
  5. Step 5: Solve for x
    x = 258,482,165,386.91/570,208.80
  6. Step 6: Final answer
    x = 453,311.43

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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.