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Finding the Fourth Proportional to 1,354,303.06, 1,868,926.28 and 742,444.70

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Solution

The fourth proportional to 1,354,303.06, 1,868,926.28 and 742,444.70 is: 1,024,567.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,303.06 : 1,868,926.28 = 742,444.70 : x
  2. Step 2: Convert to fraction form
    1,354,303.06/1,868,926.28 = 742,444.70/x
  3. Step 3: Cross multiply
    1,354,303.06x = 1,868,926.28 × 742,444.70
  4. Step 4: Simplify right side
    1,354,303.06x = 1,387,574,411,276.72
  5. Step 5: Solve for x
    x = 1,387,574,411,276.72/1,354,303.06
  6. Step 6: Final answer
    x = 1,024,567.14

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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.