Home / 708,364,641.79-977,546,601.26-390,824,871.72

Finding the Fourth Proportional to 708,364,641.79, 977,546,601.26 and 390,824,871.72

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Solution

The fourth proportional to 708,364,641.79, 977,546,601.26 and 390,824,871.72 is: 539,340,196.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,364,641.79 : 977,546,601.26 = 390,824,871.72 : x
  2. Step 2: Convert to fraction form
    708,364,641.79/977,546,601.26 = 390,824,871.72/x
  3. Step 3: Cross multiply
    708,364,641.79x = 977,546,601.26 × 390,824,871.72
  4. Step 4: Simplify right side
    708,364,641.79x = 382,049,525,033,607,168
  5. Step 5: Solve for x
    x = 382,049,525,033,607,168/708,364,641.79
  6. Step 6: Final answer
    x = 539,340,196.41

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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.