Home / 763,395.60-1,145,530.80-290,420.40

Finding the Fourth Proportional to 763,395.60, 1,145,530.80 and 290,420.40

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Solution

The fourth proportional to 763,395.60, 1,145,530.80 and 290,420.40 is: 435,797.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,395.60 : 1,145,530.80 = 290,420.40 : x
  2. Step 2: Convert to fraction form
    763,395.60/1,145,530.80 = 290,420.40/x
  3. Step 3: Cross multiply
    763,395.60x = 1,145,530.80 × 290,420.40
  4. Step 4: Simplify right side
    763,395.60x = 332,685,513,148.32
  5. Step 5: Solve for x
    x = 332,685,513,148.32/763,395.60
  6. Step 6: Final answer
    x = 435,797.00

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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.