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Finding the Fourth Proportional to 707,595.40, 976,417.50 and 421,069.24

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Solution

The fourth proportional to 707,595.40, 976,417.50 and 421,069.24 is: 581,037.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,595.40 : 976,417.50 = 421,069.24 : x
  2. Step 2: Convert to fraction form
    707,595.40/976,417.50 = 421,069.24/x
  3. Step 3: Cross multiply
    707,595.40x = 976,417.50 × 421,069.24
  4. Step 4: Simplify right side
    707,595.40x = 411,139,374,647.70
  5. Step 5: Solve for x
    x = 411,139,374,647.70/707,595.40
  6. Step 6: Final answer
    x = 581,037.38

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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.