Home / 717,109,857.35-989,598,164.60-438,630,924.23

Finding the Fourth Proportional to 717,109,857.35, 989,598,164.60 and 438,630,924.23

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Solution

The fourth proportional to 717,109,857.35, 989,598,164.60 and 438,630,924.23 is: 605,302,455.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,109,857.35 : 989,598,164.60 = 438,630,924.23 : x
  2. Step 2: Convert to fraction form
    717,109,857.35/989,598,164.60 = 438,630,924.23/x
  3. Step 3: Cross multiply
    717,109,857.35x = 989,598,164.60 × 438,630,924.23
  4. Step 4: Simplify right side
    717,109,857.35x = 434,068,357,552,616,576
  5. Step 5: Solve for x
    x = 434,068,357,552,616,576/717,109,857.35
  6. Step 6: Final answer
    x = 605,302,455.55

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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.