Home / 1,275,264,296.80-1,912,896,445.20-355,282,626.40

Finding the Fourth Proportional to 1,275,264,296.80, 1,912,896,445.20 and 355,282,626.40

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Solution

The fourth proportional to 1,275,264,296.80, 1,912,896,445.20 and 355,282,626.40 is: 532,923,939.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,264,296.80 : 1,912,896,445.20 = 355,282,626.40 : x
  2. Step 2: Convert to fraction form
    1,275,264,296.80/1,912,896,445.20 = 355,282,626.40/x
  3. Step 3: Cross multiply
    1,275,264,296.80x = 1,912,896,445.20 × 355,282,626.40
  4. Step 4: Simplify right side
    1,275,264,296.80x = 679,618,873,081,879,680
  5. Step 5: Solve for x
    x = 679,618,873,081,879,680/1,275,264,296.80
  6. Step 6: Final answer
    x = 532,923,939.60

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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.