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Finding the Fourth Proportional to 507,653.20, 761,479.80 and 478,622.80

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Solution

The fourth proportional to 507,653.20, 761,479.80 and 478,622.80 is: 717,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,653.20 : 761,479.80 = 478,622.80 : x
  2. Step 2: Convert to fraction form
    507,653.20/761,479.80 = 478,622.80/x
  3. Step 3: Cross multiply
    507,653.20x = 761,479.80 × 478,622.80
  4. Step 4: Simplify right side
    507,653.20x = 364,461,594,019.44
  5. Step 5: Solve for x
    x = 364,461,594,019.44/507,653.20
  6. Step 6: Final answer
    x = 717,934.20

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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.