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Finding the Fourth Proportional to 909,926, 1,255,697.88 and 507,518

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Solution

The fourth proportional to 909,926, 1,255,697.88 and 507,518 is: 700,374.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,926 : 1,255,697.88 = 507,518 : x
  2. Step 2: Convert to fraction form
    909,926/1,255,697.88 = 507,518/x
  3. Step 3: Cross multiply
    909,926x = 1,255,697.88 × 507,518
  4. Step 4: Simplify right side
    909,926x = 637,289,276,661.84
  5. Step 5: Solve for x
    x = 637,289,276,661.84/909,926
  6. Step 6: Final answer
    x = 700,374.84

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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.