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Finding the Fourth Proportional to 978,328.40, 1,371,526 and 978,328.40

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Solution

The fourth proportional to 978,328.40, 1,371,526 and 978,328.40 is: 1,371,526.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,328.40 : 1,371,526 = 978,328.40 : x
  2. Step 2: Convert to fraction form
    978,328.40/1,371,526 = 978,328.40/x
  3. Step 3: Cross multiply
    978,328.40x = 1,371,526 × 978,328.40
  4. Step 4: Simplify right side
    978,328.40x = 1,341,802,837,138.40
  5. Step 5: Solve for x
    x = 1,341,802,837,138.40/978,328.40
  6. Step 6: Final answer
    x = 1,371,526.00

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.