Home / 1,150,303.20-1,587,420-640,994.40

Finding the Fourth Proportional to 1,150,303.20, 1,587,420 and 640,994.40

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Solution

The fourth proportional to 1,150,303.20, 1,587,420 and 640,994.40 is: 884,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150,303.20 : 1,587,420 = 640,994.40 : x
  2. Step 2: Convert to fraction form
    1,150,303.20/1,587,420 = 640,994.40/x
  3. Step 3: Cross multiply
    1,150,303.20x = 1,587,420 × 640,994.40
  4. Step 4: Simplify right side
    1,150,303.20x = 1,017,527,330,448
  5. Step 5: Solve for x
    x = 1,017,527,330,448/1,150,303.20
  6. Step 6: Final answer
    x = 884,573.15

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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.