Home / 903,870.40-1,355,920.80-343,065.28

Finding the Fourth Proportional to 903,870.40, 1,355,920.80 and 343,065.28

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Solution

The fourth proportional to 903,870.40, 1,355,920.80 and 343,065.28 is: 514,641.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,870.40 : 1,355,920.80 = 343,065.28 : x
  2. Step 2: Convert to fraction form
    903,870.40/1,355,920.80 = 343,065.28/x
  3. Step 3: Cross multiply
    903,870.40x = 1,355,920.80 × 343,065.28
  4. Step 4: Simplify right side
    903,870.40x = 465,169,348,909.82
  5. Step 5: Solve for x
    x = 465,169,348,909.82/903,870.40
  6. Step 6: Final answer
    x = 514,641.64

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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.