Home / 708,364,733.58-977,546,727.59-390,824,963.51

Finding the Fourth Proportional to 708,364,733.58, 977,546,727.59 and 390,824,963.51

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Solution

The fourth proportional to 708,364,733.58, 977,546,727.59 and 390,824,963.51 is: 539,340,322.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,364,733.58 : 977,546,727.59 = 390,824,963.51 : x
  2. Step 2: Convert to fraction form
    708,364,733.58/977,546,727.59 = 390,824,963.51/x
  3. Step 3: Cross multiply
    708,364,733.58x = 977,546,727.59 × 390,824,963.51
  4. Step 4: Simplify right side
    708,364,733.58x = 382,049,664,132,839,808
  5. Step 5: Solve for x
    x = 382,049,664,132,839,808/708,364,733.58
  6. Step 6: Final answer
    x = 539,340,322.89

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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.