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Finding the Fourth Proportional to 572,746.80, 790,368.72 and 318,114.42

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Solution

The fourth proportional to 572,746.80, 790,368.72 and 318,114.42 is: 438,985.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,746.80 : 790,368.72 = 318,114.42 : x
  2. Step 2: Convert to fraction form
    572,746.80/790,368.72 = 318,114.42/x
  3. Step 3: Cross multiply
    572,746.80x = 790,368.72 × 318,114.42
  4. Step 4: Simplify right side
    572,746.80x = 251,427,686,948.94
  5. Step 5: Solve for x
    x = 251,427,686,948.94/572,746.80
  6. Step 6: Final answer
    x = 438,985.76

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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.