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Finding the Fourth Proportional to 700,920.80, 1,051,640.40 and 675,000.80

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Solution

The fourth proportional to 700,920.80, 1,051,640.40 and 675,000.80 is: 1,012,750.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,920.80 : 1,051,640.40 = 675,000.80 : x
  2. Step 2: Convert to fraction form
    700,920.80/1,051,640.40 = 675,000.80/x
  3. Step 3: Cross multiply
    700,920.80x = 1,051,640.40 × 675,000.80
  4. Step 4: Simplify right side
    700,920.80x = 709,858,111,312.32
  5. Step 5: Solve for x
    x = 709,858,111,312.32/700,920.80
  6. Step 6: Final answer
    x = 1,012,750.81

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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.