Home / 947,128.15-1,421,252.70-348,509.65

Finding the Fourth Proportional to 947,128.15, 1,421,252.70 and 348,509.65

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Solution

The fourth proportional to 947,128.15, 1,421,252.70 and 348,509.65 is: 522,970.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,128.15 : 1,421,252.70 = 348,509.65 : x
  2. Step 2: Convert to fraction form
    947,128.15/1,421,252.70 = 348,509.65/x
  3. Step 3: Cross multiply
    947,128.15x = 1,421,252.70 × 348,509.65
  4. Step 4: Simplify right side
    947,128.15x = 495,320,281,038.56
  5. Step 5: Solve for x
    x = 495,320,281,038.56/947,128.15
  6. Step 6: Final answer
    x = 522,970.71

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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.