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Finding the Fourth Proportional to 1,312,873.02, 1,811,070.36 and 904,272.12

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Solution

The fourth proportional to 1,312,873.02, 1,811,070.36 and 904,272.12 is: 1,247,417.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,873.02 : 1,811,070.36 = 904,272.12 : x
  2. Step 2: Convert to fraction form
    1,312,873.02/1,811,070.36 = 904,272.12/x
  3. Step 3: Cross multiply
    1,312,873.02x = 1,811,070.36 × 904,272.12
  4. Step 4: Simplify right side
    1,312,873.02x = 1,637,700,433,906.36
  5. Step 5: Solve for x
    x = 1,637,700,433,906.36/1,312,873.02
  6. Step 6: Final answer
    x = 1,247,417.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.