Home / 747,339,985.20-1,121,009,977.80-255,889,920.46

Finding the Fourth Proportional to 747,339,985.20, 1,121,009,977.80 and 255,889,920.46

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Solution

The fourth proportional to 747,339,985.20, 1,121,009,977.80 and 255,889,920.46 is: 383,834,880.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,339,985.20 : 1,121,009,977.80 = 255,889,920.46 : x
  2. Step 2: Convert to fraction form
    747,339,985.20/1,121,009,977.80 = 255,889,920.46/x
  3. Step 3: Cross multiply
    747,339,985.20x = 1,121,009,977.80 × 255,889,920.46
  4. Step 4: Simplify right side
    747,339,985.20x = 286,855,154,054,108,352
  5. Step 5: Solve for x
    x = 286,855,154,054,108,352/747,339,985.20
  6. Step 6: Final answer
    x = 383,834,880.69

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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.