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Finding the Fourth Proportional to 518,547.60, 777,821.40 and 487,054.80

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Solution

The fourth proportional to 518,547.60, 777,821.40 and 487,054.80 is: 730,582.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,547.60 : 777,821.40 = 487,054.80 : x
  2. Step 2: Convert to fraction form
    518,547.60/777,821.40 = 487,054.80/x
  3. Step 3: Cross multiply
    518,547.60x = 777,821.40 × 487,054.80
  4. Step 4: Simplify right side
    518,547.60x = 378,841,646,412.72
  5. Step 5: Solve for x
    x = 378,841,646,412.72/518,547.60
  6. Step 6: Final answer
    x = 730,582.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.