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Finding the Fourth Proportional to 909,918, 1,255,686.84 and 507,510

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Solution

The fourth proportional to 909,918, 1,255,686.84 and 507,510 is: 700,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,918 : 1,255,686.84 = 507,510 : x
  2. Step 2: Convert to fraction form
    909,918/1,255,686.84 = 507,510/x
  3. Step 3: Cross multiply
    909,918x = 1,255,686.84 × 507,510
  4. Step 4: Simplify right side
    909,918x = 637,273,628,168.40
  5. Step 5: Solve for x
    x = 637,273,628,168.40/909,918
  6. Step 6: Final answer
    x = 700,363.80

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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.