Home / 1,919,417.70-2,878,831.28-640,047.40

Finding the Fourth Proportional to 1,919,417.70, 2,878,831.28 and 640,047.40

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Solution

The fourth proportional to 1,919,417.70, 2,878,831.28 and 640,047.40 is: 959,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,417.70 : 2,878,831.28 = 640,047.40 : x
  2. Step 2: Convert to fraction form
    1,919,417.70/2,878,831.28 = 640,047.40/x
  3. Step 3: Cross multiply
    1,919,417.70x = 2,878,831.28 × 640,047.40
  4. Step 4: Simplify right side
    1,919,417.70x = 1,842,588,475,802.67
  5. Step 5: Solve for x
    x = 1,842,588,475,802.67/1,919,417.70
  6. Step 6: Final answer
    x = 959,972.64

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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.