Home / 1,140,349.20-1,709,875.80-430,400.40

Finding the Fourth Proportional to 1,140,349.20, 1,709,875.80 and 430,400.40

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Solution

The fourth proportional to 1,140,349.20, 1,709,875.80 and 430,400.40 is: 645,356.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,349.20 : 1,709,875.80 = 430,400.40 : x
  2. Step 2: Convert to fraction form
    1,140,349.20/1,709,875.80 = 430,400.40/x
  3. Step 3: Cross multiply
    1,140,349.20x = 1,709,875.80 × 430,400.40
  4. Step 4: Simplify right side
    1,140,349.20x = 735,931,228,270.32
  5. Step 5: Solve for x
    x = 735,931,228,270.32/1,140,349.20
  6. Step 6: Final answer
    x = 645,356.03

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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.