Home / 1,178,158.40-1,767,237.60-430,107.20

Finding the Fourth Proportional to 1,178,158.40, 1,767,237.60 and 430,107.20

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Solution

The fourth proportional to 1,178,158.40, 1,767,237.60 and 430,107.20 is: 645,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,158.40 : 1,767,237.60 = 430,107.20 : x
  2. Step 2: Convert to fraction form
    1,178,158.40/1,767,237.60 = 430,107.20/x
  3. Step 3: Cross multiply
    1,178,158.40x = 1,767,237.60 × 430,107.20
  4. Step 4: Simplify right side
    1,178,158.40x = 760,101,615,870.72
  5. Step 5: Solve for x
    x = 760,101,615,870.72/1,178,158.40
  6. Step 6: Final answer
    x = 645,160.80

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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.