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Finding the Fourth Proportional to 577,074.58, 796,459.80 and 390,721.52

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Solution

The fourth proportional to 577,074.58, 796,459.80 and 390,721.52 is: 539,261.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,074.58 : 796,459.80 = 390,721.52 : x
  2. Step 2: Convert to fraction form
    577,074.58/796,459.80 = 390,721.52/x
  3. Step 3: Cross multiply
    577,074.58x = 796,459.80 × 390,721.52
  4. Step 4: Simplify right side
    577,074.58x = 311,193,985,482.90
  5. Step 5: Solve for x
    x = 311,193,985,482.90/577,074.58
  6. Step 6: Final answer
    x = 539,261.30

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1.5x scale

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.