Home / 478,048,148.24-660,011,579.20-390,152,132.24

Finding the Fourth Proportional to 478,048,148.24, 660,011,579.20 and 390,152,132.24

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Solution

The fourth proportional to 478,048,148.24, 660,011,579.20 and 390,152,132.24 is: 538,658,973.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,048,148.24 : 660,011,579.20 = 390,152,132.24 : x
  2. Step 2: Convert to fraction form
    478,048,148.24/660,011,579.20 = 390,152,132.24/x
  3. Step 3: Cross multiply
    478,048,148.24x = 660,011,579.20 × 390,152,132.24
  4. Step 4: Simplify right side
    478,048,148.24x = 257,504,924,927,969,664
  5. Step 5: Solve for x
    x = 257,504,924,927,969,664/478,048,148.24
  6. Step 6: Final answer
    x = 538,658,973.74

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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.