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Finding the Fourth Proportional to 709,054.71, 978,856.83 and 547,547.19

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Solution

The fourth proportional to 709,054.71, 978,856.83 and 547,547.19 is: 755,894.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,054.71 : 978,856.83 = 547,547.19 : x
  2. Step 2: Convert to fraction form
    709,054.71/978,856.83 = 547,547.19/x
  3. Step 3: Cross multiply
    709,054.71x = 978,856.83 × 547,547.19
  4. Step 4: Simplify right side
    709,054.71x = 535,970,306,678.81
  5. Step 5: Solve for x
    x = 535,970,306,678.81/709,054.71
  6. Step 6: Final answer
    x = 755,894.15

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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.