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Finding the Fourth Proportional to 617,656.79, 922,374.84 and 610,976.87

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Solution

The fourth proportional to 617,656.79, 922,374.84 and 610,976.87 is: 912,399.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,656.79 : 922,374.84 = 610,976.87 : x
  2. Step 2: Convert to fraction form
    617,656.79/922,374.84 = 610,976.87/x
  3. Step 3: Cross multiply
    617,656.79x = 922,374.84 × 610,976.87
  4. Step 4: Simplify right side
    617,656.79x = 563,549,699,036.50
  5. Step 5: Solve for x
    x = 563,549,699,036.50/617,656.79
  6. Step 6: Final answer
    x = 912,399.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.