Home / 689,856,009.60-1,034,784,014.40-644,170,454.40

Finding the Fourth Proportional to 689,856,009.60, 1,034,784,014.40 and 644,170,454.40

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Solution

The fourth proportional to 689,856,009.60, 1,034,784,014.40 and 644,170,454.40 is: 966,255,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,856,009.60 : 1,034,784,014.40 = 644,170,454.40 : x
  2. Step 2: Convert to fraction form
    689,856,009.60/1,034,784,014.40 = 644,170,454.40/x
  3. Step 3: Cross multiply
    689,856,009.60x = 1,034,784,014.40 × 644,170,454.40
  4. Step 4: Simplify right side
    689,856,009.60x = 666,577,288,761,904,128
  5. Step 5: Solve for x
    x = 666,577,288,761,904,128/689,856,009.60
  6. Step 6: Final answer
    x = 966,255,681.60

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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.