Home / 847,872,139.20-1,271,808,208.80-265,655,025.60

Finding the Fourth Proportional to 847,872,139.20, 1,271,808,208.80 and 265,655,025.60

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Solution

The fourth proportional to 847,872,139.20, 1,271,808,208.80 and 265,655,025.60 is: 398,482,538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,872,139.20 : 1,271,808,208.80 = 265,655,025.60 : x
  2. Step 2: Convert to fraction form
    847,872,139.20/1,271,808,208.80 = 265,655,025.60/x
  3. Step 3: Cross multiply
    847,872,139.20x = 1,271,808,208.80 × 265,655,025.60
  4. Step 4: Simplify right side
    847,872,139.20x = 337,862,242,267,054,144
  5. Step 5: Solve for x
    x = 337,862,242,267,054,144/847,872,139.20
  6. Step 6: Final answer
    x = 398,482,538.40

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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.