Home / 907,271.40-1,360,907.10-509,140.20

Finding the Fourth Proportional to 907,271.40, 1,360,907.10 and 509,140.20

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Solution

The fourth proportional to 907,271.40, 1,360,907.10 and 509,140.20 is: 763,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,271.40 : 1,360,907.10 = 509,140.20 : x
  2. Step 2: Convert to fraction form
    907,271.40/1,360,907.10 = 509,140.20/x
  3. Step 3: Cross multiply
    907,271.40x = 1,360,907.10 × 509,140.20
  4. Step 4: Simplify right side
    907,271.40x = 692,892,513,075.42
  5. Step 5: Solve for x
    x = 692,892,513,075.42/907,271.40
  6. Step 6: Final answer
    x = 763,710.30

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Double scale
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Similar ratio
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1.5x scale

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.