Home / 708,364,063.88-977,545,804.37-390,824,292.74

Finding the Fourth Proportional to 708,364,063.88, 977,545,804.37 and 390,824,292.74

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Solution

The fourth proportional to 708,364,063.88, 977,545,804.37 and 390,824,292.74 is: 539,339,397.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,364,063.88 : 977,545,804.37 = 390,824,292.74 : x
  2. Step 2: Convert to fraction form
    708,364,063.88/977,545,804.37 = 390,824,292.74/x
  3. Step 3: Cross multiply
    708,364,063.88x = 977,545,804.37 × 390,824,292.74
  4. Step 4: Simplify right side
    708,364,063.88x = 382,048,647,607,017,792
  5. Step 5: Solve for x
    x = 382,048,647,607,017,792/708,364,063.88
  6. Step 6: Final answer
    x = 539,339,397.76

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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.