Home / 12,430,961,678.40-18,643,456,533.60-7,179,213,019.20

Finding the Fourth Proportional to 12,430,961,678.40, 18,643,456,533.60 and 7,179,213,019.20

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Solution

The fourth proportional to 12,430,961,678.40, 18,643,456,533.60 and 7,179,213,019.20 is: 10,767,095,043.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430,961,678.40 : 18,643,456,533.60 = 7,179,213,019.20 : x
  2. Step 2: Convert to fraction form
    12,430,961,678.40/18,643,456,533.60 = 7,179,213,019.20/x
  3. Step 3: Cross multiply
    12,430,961,678.40x = 18,643,456,533.60 × 7,179,213,019.20
  4. Step 4: Simplify right side
    12,430,961,678.40x = 133,845,345,868,910,411,776
  5. Step 5: Solve for x
    x = 133,845,345,868,910,411,776/12,430,961,678.40
  6. Step 6: Final answer
    x = 10,767,095,043.14

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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.