Home / 487,185,803.40-729,032,984.16-421,832,338.50

Finding the Fourth Proportional to 487,185,803.40, 729,032,984.16 and 421,832,338.50

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Solution

The fourth proportional to 487,185,803.40, 729,032,984.16 and 421,832,338.50 is: 631,236,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,185,803.40 : 729,032,984.16 = 421,832,338.50 : x
  2. Step 2: Convert to fraction form
    487,185,803.40/729,032,984.16 = 421,832,338.50/x
  3. Step 3: Cross multiply
    487,185,803.40x = 729,032,984.16 × 421,832,338.50
  4. Step 4: Simplify right side
    487,185,803.40x = 307,529,688,551,846,272
  5. Step 5: Solve for x
    x = 307,529,688,551,846,272/487,185,803.40
  6. Step 6: Final answer
    x = 631,236,966.28

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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.