Home / 738,741.40-1,108,112.10-645,429.40

Finding the Fourth Proportional to 738,741.40, 1,108,112.10 and 645,429.40

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Solution

The fourth proportional to 738,741.40, 1,108,112.10 and 645,429.40 is: 968,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,741.40 : 1,108,112.10 = 645,429.40 : x
  2. Step 2: Convert to fraction form
    738,741.40/1,108,112.10 = 645,429.40/x
  3. Step 3: Cross multiply
    738,741.40x = 1,108,112.10 × 645,429.40
  4. Step 4: Simplify right side
    738,741.40x = 715,208,127,835.74
  5. Step 5: Solve for x
    x = 715,208,127,835.74/738,741.40
  6. Step 6: Final answer
    x = 968,144.10

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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.