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Finding the Fourth Proportional to 397,779.32, 547,549.05 and 346,703.30

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Solution

The fourth proportional to 397,779.32, 547,549.05 and 346,703.30 is: 477,242.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,779.32 : 547,549.05 = 346,703.30 : x
  2. Step 2: Convert to fraction form
    397,779.32/547,549.05 = 346,703.30/x
  3. Step 3: Cross multiply
    397,779.32x = 547,549.05 × 346,703.30
  4. Step 4: Simplify right side
    397,779.32x = 189,837,059,809.12
  5. Step 5: Solve for x
    x = 189,837,059,809.12/397,779.32
  6. Step 6: Final answer
    x = 477,242.16

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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.