Home / 788,180,643.39-1,087,508,885.31-470,579,188.98

Finding the Fourth Proportional to 788,180,643.39, 1,087,508,885.31 and 470,579,188.98

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Solution

The fourth proportional to 788,180,643.39, 1,087,508,885.31 and 470,579,188.98 is: 649,291,572.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,180,643.39 : 1,087,508,885.31 = 470,579,188.98 : x
  2. Step 2: Convert to fraction form
    788,180,643.39/1,087,508,885.31 = 470,579,188.98/x
  3. Step 3: Cross multiply
    788,180,643.39x = 1,087,508,885.31 × 470,579,188.98
  4. Step 4: Simplify right side
    788,180,643.39x = 511,759,049,257,723,648
  5. Step 5: Solve for x
    x = 511,759,049,257,723,648/788,180,643.39
  6. Step 6: Final answer
    x = 649,291,572.37

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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.