Home / 838,692,762.68-1,157,399,520.14-462,341,090.72

Finding the Fourth Proportional to 838,692,762.68, 1,157,399,520.14 and 462,341,090.72

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Solution

The fourth proportional to 838,692,762.68, 1,157,399,520.14 and 462,341,090.72 is: 638,032,638.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,692,762.68 : 1,157,399,520.14 = 462,341,090.72 : x
  2. Step 2: Convert to fraction form
    838,692,762.68/1,157,399,520.14 = 462,341,090.72/x
  3. Step 3: Cross multiply
    838,692,762.68x = 1,157,399,520.14 × 462,341,090.72
  4. Step 4: Simplify right side
    838,692,762.68x = 535,113,356,540,332,288
  5. Step 5: Solve for x
    x = 535,113,356,540,332,288/838,692,762.68
  6. Step 6: Final answer
    x = 638,032,638.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.