Home / 890,710,905.80-1,336,402,281.90-431,055,993.80

Finding the Fourth Proportional to 890,710,905.80, 1,336,402,281.90 and 431,055,993.80

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Solution

The fourth proportional to 890,710,905.80, 1,336,402,281.90 and 431,055,993.80 is: 646,746,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,710,905.80 : 1,336,402,281.90 = 431,055,993.80 : x
  2. Step 2: Convert to fraction form
    890,710,905.80/1,336,402,281.90 = 431,055,993.80/x
  3. Step 3: Cross multiply
    890,710,905.80x = 1,336,402,281.90 × 431,055,993.80
  4. Step 4: Simplify right side
    890,710,905.80x = 576,064,213,740,992,320
  5. Step 5: Solve for x
    x = 576,064,213,740,992,320/890,710,905.80
  6. Step 6: Final answer
    x = 646,746,559.39

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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.