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Finding the Fourth Proportional to 579,356.16, 865,070.88 and 518,994.96

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Solution

The fourth proportional to 579,356.16, 865,070.88 and 518,994.96 is: 774,942.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,356.16 : 865,070.88 = 518,994.96 : x
  2. Step 2: Convert to fraction form
    579,356.16/865,070.88 = 518,994.96/x
  3. Step 3: Cross multiply
    579,356.16x = 865,070.88 × 518,994.96
  4. Step 4: Simplify right side
    579,356.16x = 448,967,426,762.77
  5. Step 5: Solve for x
    x = 448,967,426,762.77/579,356.16
  6. Step 6: Final answer
    x = 774,942.01

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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.