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Finding the Fourth Proportional to 520,388.54, 776,384.61 and 463,590.78

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Solution

The fourth proportional to 520,388.54, 776,384.61 and 463,590.78 is: 691,646.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,388.54 : 776,384.61 = 463,590.78 : x
  2. Step 2: Convert to fraction form
    520,388.54/776,384.61 = 463,590.78/x
  3. Step 3: Cross multiply
    520,388.54x = 776,384.61 × 463,590.78
  4. Step 4: Simplify right side
    520,388.54x = 359,924,746,929.90
  5. Step 5: Solve for x
    x = 359,924,746,929.90/520,388.54
  6. Step 6: Final answer
    x = 691,646.19

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1.5x scale

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.