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Finding the Fourth Proportional to 707,596.40, 976,418.88 and 421,070.24

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Solution

The fourth proportional to 707,596.40, 976,418.88 and 421,070.24 is: 581,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,596.40 : 976,418.88 = 421,070.24 : x
  2. Step 2: Convert to fraction form
    707,596.40/976,418.88 = 421,070.24/x
  3. Step 3: Cross multiply
    707,596.40x = 976,418.88 × 421,070.24
  4. Step 4: Simplify right side
    707,596.40x = 411,140,932,142.13
  5. Step 5: Solve for x
    x = 411,140,932,142.13/707,596.40
  6. Step 6: Final answer
    x = 581,038.76

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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.