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Finding the Fourth Proportional to 1,325,390.07, 1,829,045.31 and 774,426.45

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Solution

The fourth proportional to 1,325,390.07, 1,829,045.31 and 774,426.45 is: 1,068,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,390.07 : 1,829,045.31 = 774,426.45 : x
  2. Step 2: Convert to fraction form
    1,325,390.07/1,829,045.31 = 774,426.45/x
  3. Step 3: Cross multiply
    1,325,390.07x = 1,829,045.31 × 774,426.45
  4. Step 4: Simplify right side
    1,325,390.07x = 1,416,461,066,312.45
  5. Step 5: Solve for x
    x = 1,416,461,066,312.45/1,325,390.07
  6. Step 6: Final answer
    x = 1,068,712.60

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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.