Home / 717,311,529.32-989,849,886.25-395,429,111.25

Finding the Fourth Proportional to 717,311,529.32, 989,849,886.25 and 395,429,111.25

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Solution

The fourth proportional to 717,311,529.32, 989,849,886.25 and 395,429,111.25 is: 545,670,109.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,311,529.32 : 989,849,886.25 = 395,429,111.25 : x
  2. Step 2: Convert to fraction form
    717,311,529.32/989,849,886.25 = 395,429,111.25/x
  3. Step 3: Cross multiply
    717,311,529.32x = 989,849,886.25 × 395,429,111.25
  4. Step 4: Simplify right side
    717,311,529.32x = 391,415,460,796,811,072
  5. Step 5: Solve for x
    x = 391,415,460,796,811,072/717,311,529.32
  6. Step 6: Final answer
    x = 545,670,109.57

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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.