Home / 991,762.80-1,487,644.20-317,842.80

Finding the Fourth Proportional to 991,762.80, 1,487,644.20 and 317,842.80

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Solution

The fourth proportional to 991,762.80, 1,487,644.20 and 317,842.80 is: 476,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,762.80 : 1,487,644.20 = 317,842.80 : x
  2. Step 2: Convert to fraction form
    991,762.80/1,487,644.20 = 317,842.80/x
  3. Step 3: Cross multiply
    991,762.80x = 1,487,644.20 × 317,842.80
  4. Step 4: Simplify right side
    991,762.80x = 472,836,997,931.76
  5. Step 5: Solve for x
    x = 472,836,997,931.76/991,762.80
  6. Step 6: Final answer
    x = 476,764.20

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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.