Home / 390,421,635,254.56-538,752,288,398.16-219,110,480,996.32

Finding the Fourth Proportional to 390,421,635,254.56, 538,752,288,398.16 and 219,110,480,996.32

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Solution

The fourth proportional to 390,421,635,254.56, 538,752,288,398.16 and 219,110,480,996.32 is: 302,355,869,627.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,421,635,254.56 : 538,752,288,398.16 = 219,110,480,996.32 : x
  2. Step 2: Convert to fraction form
    390,421,635,254.56/538,752,288,398.16 = 219,110,480,996.32/x
  3. Step 3: Cross multiply
    390,421,635,254.56x = 538,752,288,398.16 × 219,110,480,996.32
  4. Step 4: Simplify right side
    390,421,635,254.56x = 118,046,273,048,788,942,716,928
  5. Step 5: Solve for x
    x = 118,046,273,048,788,942,716,928/390,421,635,254.56
  6. Step 6: Final answer
    x = 302,355,869,627.52

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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.