Home / 786,711.90-1,085,630.88-442,554.65

Finding the Fourth Proportional to 786,711.90, 1,085,630.88 and 442,554.65

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Solution

The fourth proportional to 786,711.90, 1,085,630.88 and 442,554.65 is: 610,707.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,711.90 : 1,085,630.88 = 442,554.65 : x
  2. Step 2: Convert to fraction form
    786,711.90/1,085,630.88 = 442,554.65/x
  3. Step 3: Cross multiply
    786,711.90x = 1,085,630.88 × 442,554.65
  4. Step 4: Simplify right side
    786,711.90x = 480,450,994,430.13
  5. Step 5: Solve for x
    x = 480,450,994,430.13/786,711.90
  6. Step 6: Final answer
    x = 610,707.67

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Double scale
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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.