Home / 709,715.10-1,064,572.65-429,779.10

Finding the Fourth Proportional to 709,715.10, 1,064,572.65 and 429,779.10

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Solution

The fourth proportional to 709,715.10, 1,064,572.65 and 429,779.10 is: 644,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,715.10 : 1,064,572.65 = 429,779.10 : x
  2. Step 2: Convert to fraction form
    709,715.10/1,064,572.65 = 429,779.10/x
  3. Step 3: Cross multiply
    709,715.10x = 1,064,572.65 × 429,779.10
  4. Step 4: Simplify right side
    709,715.10x = 457,531,075,401.62
  5. Step 5: Solve for x
    x = 457,531,075,401.62/709,715.10
  6. Step 6: Final answer
    x = 644,668.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.