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Finding the Fourth Proportional to 607,999.80, 911,999.70 and 575,340.60

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Solution

The fourth proportional to 607,999.80, 911,999.70 and 575,340.60 is: 863,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,999.80 : 911,999.70 = 575,340.60 : x
  2. Step 2: Convert to fraction form
    607,999.80/911,999.70 = 575,340.60/x
  3. Step 3: Cross multiply
    607,999.80x = 911,999.70 × 575,340.60
  4. Step 4: Simplify right side
    607,999.80x = 524,710,454,597.82
  5. Step 5: Solve for x
    x = 524,710,454,597.82/607,999.80
  6. Step 6: Final answer
    x = 863,010.90

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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.