Home / 687,745,206.40-1,031,617,809.60-470,066,972.80

Finding the Fourth Proportional to 687,745,206.40, 1,031,617,809.60 and 470,066,972.80

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Solution

The fourth proportional to 687,745,206.40, 1,031,617,809.60 and 470,066,972.80 is: 705,100,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,745,206.40 : 1,031,617,809.60 = 470,066,972.80 : x
  2. Step 2: Convert to fraction form
    687,745,206.40/1,031,617,809.60 = 470,066,972.80/x
  3. Step 3: Cross multiply
    687,745,206.40x = 1,031,617,809.60 × 470,066,972.80
  4. Step 4: Simplify right side
    687,745,206.40x = 484,929,460,845,238,784
  5. Step 5: Solve for x
    x = 484,929,460,845,238,784/687,745,206.40
  6. Step 6: Final answer
    x = 705,100,459.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.