Home / 915,386.16-1,263,307.74-507,615.90

Finding the Fourth Proportional to 915,386.16, 1,263,307.74 and 507,615.90

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Solution

The fourth proportional to 915,386.16, 1,263,307.74 and 507,615.90 is: 700,551.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,386.16 : 1,263,307.74 = 507,615.90 : x
  2. Step 2: Convert to fraction form
    915,386.16/1,263,307.74 = 507,615.90/x
  3. Step 3: Cross multiply
    915,386.16x = 1,263,307.74 × 507,615.90
  4. Step 4: Simplify right side
    915,386.16x = 641,275,095,417.07
  5. Step 5: Solve for x
    x = 641,275,095,417.07/915,386.16
  6. Step 6: Final answer
    x = 700,551.44

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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.