Home / 1,318,595,931.60-1,977,893,897.40-398,614,261.20

Finding the Fourth Proportional to 1,318,595,931.60, 1,977,893,897.40 and 398,614,261.20

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Solution

The fourth proportional to 1,318,595,931.60, 1,977,893,897.40 and 398,614,261.20 is: 597,921,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,595,931.60 : 1,977,893,897.40 = 398,614,261.20 : x
  2. Step 2: Convert to fraction form
    1,318,595,931.60/1,977,893,897.40 = 398,614,261.20/x
  3. Step 3: Cross multiply
    1,318,595,931.60x = 1,977,893,897.40 × 398,614,261.20
  4. Step 4: Simplify right side
    1,318,595,931.60x = 788,416,714,644,089,600
  5. Step 5: Solve for x
    x = 788,416,714,644,089,600/1,318,595,931.60
  6. Step 6: Final answer
    x = 597,921,391.80

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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.