Home / 905,410.77-1,249,466.53-497,538.89

Finding the Fourth Proportional to 905,410.77, 1,249,466.53 and 497,538.89

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Solution

The fourth proportional to 905,410.77, 1,249,466.53 and 497,538.89 is: 686,603.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,410.77 : 1,249,466.53 = 497,538.89 : x
  2. Step 2: Convert to fraction form
    905,410.77/1,249,466.53 = 497,538.89/x
  3. Step 3: Cross multiply
    905,410.77x = 1,249,466.53 × 497,538.89
  4. Step 4: Simplify right side
    905,410.77x = 621,658,190,428.35
  5. Step 5: Solve for x
    x = 621,658,190,428.35/905,410.77
  6. Step 6: Final answer
    x = 686,603.49

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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.